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Audio Conferencing

Sometimes people in your organization will need to use a phone to call in to a meeting. Skype for Business and Microsoft Teams include the Audio Conferencing feature for just this situation! People can call in to meetings using a phone instead of using the Skype for Business and Microsoft Teams apps on a mobile device or PC. After you have decided you want Audio Conferencing for your organization, you need to buy 1 Audio Conferencing license for each person in your organization who is going to schedule/host an audio meeting.

With Audio Conferencing, there are toll and toll free phone numbers that can be used by your users to dial-in to meetings. Toll numbers from the following countries or regions are automatically assigned as shared audio conferencing numbers to organizations when they're enabled for Audio Conferencing. Dedicated toll and toll-free numbers can be assigned to your organization from additional cities.

Important

There isn't a resource that contains a listing of all of the dial-in numbers for Audio Conferencing. To find out if there are dial-in phone numbers available in your area or country/region, go to Skype for Business admin center > Voice > Phone Numbers, click Add, and then click New Service Numbers. Use the lists for Country/Region, State/Region, and City to filter your search. If you are looking for toll-free service numbers, select Toll-Free from the State/Region list.

Using the Call Me feature or when adding other people to a meeting so they can join it

In Audio Conferencing there is a feature named "Call Me" and it can be used to let other people join a dial-in meeting. Use the drop down list above to search for the country/region and see if this feature is available.

Caution

Dialing out to toll-free or free phone numbers may not be possible, because some toll-free numbers only function from within a certain country or area within a country. For example, if you dial out from the United States to a toll-free number in Brazil, the call may not be successful because the call didn't originate from within Brazil or from a specific region within Brazil. The ability to dial out to toll-free numbers varies widely depending on the restrictions of the toll-free number dialed. Unfortunately, within Office 365, we can't control this behavior, and as a result, your experience may vary depending on the toll-free number dialed and the restrictions of the toll-free number.

During the introductory period, users in all organizations can dial out to when using the Call Me feature or when adding other people to a meeting to any of the following countries/regions at no additional charge, but this is subject to the Audio Conferencing complimentary dial-out period.

Phone System

With Phone System, you can create auto attendants and call queues (with a toll or toll-free number) to answer incoming calls for your organization, and when you add a Calling Plan for users they can use Skype for Business to take care of basic call-control tasks, such as placing and receiving calls, transferring calls, and muting and unmuting calls. Phone System users can click a name in their address book and Skype for Business will place a call to that person. To place and receive calls, Phone System users can use their mobile devices, a headset with a laptop or PC, or one of many IP phones that work with Skype for Business.

In addition to getting phone numbers for individual users from Office 365, it's also possible to search and acquire toll or toll-free phone numbers for services such as Audio Conferencing (for conference bridges), auto attendants and call queues. These are called service numbers. See Getting service phone numbers to get phone numbers. But for your users, after you assign a Calling Plan to them, you can assign a user phone number so they can make and receive phone calls. You can find those phone numbers by going here. You can also see Assign, change, or remove a phone number for a user.

The availability of toll phone numbers from some of these locations might vary at any given time depending on inventory levels.

Use the drop-down list at the top of the page to search for a country or region and what services are available.

Calling Plans

Along with Phone System, a Calling Plans let users make and receive phone calls. You first need to get a user (subscriber) phone number (not a service number) to assign to the user, and then assign a Calling Plan. There are two types of Calling Plans available: Domestic and Domestic and International. See What are Calling Plans? for more details.

The country/region is based on the location of the user's license in the Office 365 admin center > Active Users and not the billing address listed under the Organization Profile in the Office 365 admin center.

Toll and toll-free phone numbers for services

In addition to getting phone numbers for individual users from Office 365, it's also possible to search and acquire toll or toll-free phone numbers for services such as Audio Conferencing (for conference bridges), auto attendants, and call queues. These are called service numbers.

The following is a list of capitals and major cities from where you can get toll service numbers to use with Audio Conferencing and Calling Plans. You can get toll service numbers from these locations using the Skype for Business admin center.

Use the drop down list at the top of the page to search for a country or region and what services are available.

Communications Credits

We recommend that you set up Communications Credits for your Audio Conferencing and Calling Plans users that need the ability to dial out to any destination. Many countries/regions are included, but some destinations might not be included in your Calling Plan or Audio Conferencing subscriptions.

If you don't set up Communications Credits and assign a license to users and you run out minutes for your organization (depending on your Calling Plan or Audio Conferencing plan or your country/region), they won't be able to make calls or dial out from meetings. You can find out more information including recommended funding amounts by reading What are Communications Credits?